[GreenKeys] Hall ST-8000 and driving / switching a loop?

[Larry Goga]

Hello Steve,

When I still owned my Model 28 I found this website to be a wealth of information, especially the subsection on “Connecting”.   http://www.aetherltd.com/index.html

Have fun.  I know I did.

Larry, AE5CZ


> On Dec 4, 2020, at 2:39 PM, <highpwr at bellsouth.net> <highpwr at bellsouth.net> wrote:
> 
> Thanks for all the replies,  I have been studying the ST-8000, and knew it could not switch / control a current loop directly, was just wondering if someone had designed and built one already and done the hard work for me...Hi Hi,  I'll look at the LP-1210 manual and study one circuit (don't need 10)  I would also be interested in a copy  LP1200 manual.
> 
> I figured something could be done with opto isolators and possibly additional hardware to use the low voltage out from the ST-8000 to control the loop, just wondered if someone had already been down this path.
> 
> Also realized that I could use the regenerated output to drive something like an ST-6, or CT2200 both of which I have.
> 
> A loop supply is no real issue as I have scene several simple circuits for this
> 
> 
> Any and all ideas are welcome.
> 
> 73,
> Steve
> 
> 
> 
> -----Original Message-----
> From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net> On Behalf Of William Wuttke
> Sent: Friday, December 4, 2020 2:08 PM
> To: Greenkeys <greenkeys at mailman.qth.net>
> Subject: Re: [GreenKeys] Hall ST-8000 and driving / switching a loop?
> 
> I’m using a M28ASR with an ST-8000. It definitely requires some sort of RS-232 to loop converters. I had all sorts of trouble trying to get it to work with a single loop. I finally ended up separating the keyboard and printer for a full-duplex hookup. I used simple optoisolators for converters.
> 
> Bill
> KE3BK
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
> 
>>>> Jordan Spencer Cunningham's GreenKeys Search Tool: 
>>>> https://teletype.net/gksearch 2002-to-present greenkeys archive: 
>>>> http://mailman.qth.net/pipermail/greenkeys/
>>>> 1998-to-2001 greenkeys archive: 
>>>> http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: 
>>>> http://comcents.com/tty/greenkeyssearch.html
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html Message delivered to highpwr at bellsouth.net
> 
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
> 
>>>> Jordan Spencer Cunningham's GreenKeys Search Tool: https://teletype.net/gksearch
>>>> 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
>>>> 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to lgoga at swcp.com
>